Ooze Slim Pen Twist battery blows all other vaporizers out of the water! Featuring the new preheat mode (15 seconds of continuous heating without holding the button) and adjustable temperature settings, the Slim Pen Twist Battery is perfect for anyone just starting to use cartridges or your everyday veteran. Compatible with all oil, concentrate, and essential oil cartridges with a 510 thread, and voltage settings range from 3.3V to 4.8V.